Analysis

  • max time kernel
    148s
  • max time network
    152s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    19/08/2026, 18:24

General

  • Target
    ScreenConnect.ClientSetup.msi
  • Size 9.8MB
  • Sample260819-w16xtsha48
  • SHA256 731c070c47e185b46552c4905e3f1822894d94fd51924e4f6aa2c82cdfe160ea
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • Sets service image path in registry 3 TTPs 1 IoCs

    This determines the executable launched when a service starts. It can be used to establish persistence.

  • ConnectWise ScreenConnect remote access tool

    ConnectWise ScreenConnect is a remote desktop tool that can be used as a backdoor.

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 42 IoCs
  • Enumerates connected drives 3 TTPs 46 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Boot or Logon Autostart Execution: Authentication Package 1 TTPs 1 IoCs

    Suspicious Windows Authentication Registry Modification.

  • Drops file in System32 directory 9 IoCs
  • Drops file in Program Files directory 16 IoCs
  • Drops file in Windows directory 17 IoCs
  • Event Triggered Execution: Installer Packages 2 TTPs 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks SCSI registry key(s) 3 TTPs 5 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 37 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 5 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

Processes

  • C:\Windows\system32\msiexec.exe
    msiexec.exe /I C:\Users\Admin\AppData\Local\Temp\ScreenConnect.ClientSetup.msi
    1⤵
    • Badlisted process makes network request
    • Enumerates connected drives
    • Event Triggered Execution: Installer Packages
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SetWindowsHookEx
    PID:2980
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Boot or Logon Autostart Execution: Authentication Package
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3272
    • C:\Windows\syswow64\MsiExec.exe
      C:\Windows\syswow64\MsiExec.exe -Embedding B9A9035CB98CC6CB581DA6708CF65B5A C
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3584
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI3937.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240728718 1 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.FixupServiceArguments
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:4152
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI405C.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240730234 10 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiMotw
        3⤵
        • Badlisted process makes network request
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:204
      • C:\Windows\SysWOW64\rundll32.exe
        rundll32.exe "C:\Users\Admin\AppData\Local\Temp\MSI4790.tmp",zzzzInvokeManagedCustomActionOutOfProc SfxCA_240732234 17 ScreenConnect.InstallerActions!ScreenConnect.ClientInstallerActions.CheckMsiFileName
        3⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:5824
    • C:\Windows\system32\srtasks.exe
      C:\Windows\system32\srtasks.exe ExecuteScopeRestorePoint /WaitForRestorePoint:2
      2⤵
        PID:1608
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 0946C2FC7607B6FE53AF49A246AE775F
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:2764
      • C:\Windows\syswow64\MsiExec.exe
        C:\Windows\syswow64\MsiExec.exe -Embedding 59DFB17099AFDFF54B4A0D0AB46C7CE6 E Global\MSI0000
        2⤵
        • Loads dropped DLL
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        PID:5544
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Checks SCSI registry key(s)
      PID:5864
    • C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.ClientService.exe
      "C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.ClientService.exe" "?e=Access&y=Guest&h=instance-yyjjkm-relay.screenconnect.com&p=443&s=0a254ae8-c7b0-438b-ad78-ecadb338efee&k=BgIAAACkAABSU0ExAAgAAAEAAQBRmxPQFCbqq1NlvPeUBwj1paZCZn%2fcNLa9tONoUMlGOf2dD5tbg0%2bv4oezWG9vpkLW2JLn6VAMMt4dnPzx8E5rvP5TxzfwmUsTMM8j7Xw7Mbl0DLkCGNAjRbcfjLjHRNNWfX%2fftwB6ZBarvR60uiN%2bI%2bcA4N%2fVX%2f91nyvTHP0wY1JvDDwClQGTG2UJwaVOogNhHF7aB6A%2fZZbkfuzR3D1fKBwTuBi4YrkkPE7O22AXyuENliqvBDo6ZeLWy1uezPLALcRfM24p96vl2o7iUvasbu%2f15SkwplVytwQZDEoSfdLSRQScI9v%2b%2f%2fV9lMymXtv4vQmweC%2fYZkahMCv5k5mo"
      1⤵
      • Sets service image path in registry
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in System32 directory
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:1160
      • C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.WindowsClient.exe" "RunRole" "6499642e-7a15-476e-99b5-677bec63b285" "User"
        2⤵
        • Executes dropped EXE
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1940
      • C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.WindowsClient.exe
        "C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.WindowsClient.exe" "RunRole" "894470dd-d2f1-4e02-af64-41cb54bb568f" "System"
        2⤵
        • Executes dropped EXE
        • Checks processor information in registry
        • Modifies data under HKEY_USERS
        PID:5572

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          e599283.rbs

          • Path C:\Config.Msi\e599283.rbs
          • Size 214KB
          • SHA256 c6895115e152e86430d3e5bb197fdc9dc595e55413b8f4cf73b0663267293608
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.en-US.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\Client.en-US.resources
          • Size 64KB
          • SHA256 a90983b3d26f9e6bb472663b84d13254349f62b0ad4c667fd76b3edd270240b2
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Client.resources

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\Client.resources
          • Size 6KB
          • SHA256 bd34378ad99f7609fa0c7c8edde6337c738a61d288863015629329806a1cc728
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Client.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.Client.dll
          • Size 412KB
          • SHA256 8e5531c2b302f9c95ed32ac7481d3535b6d51147257d317686c07ea1a9cb8362
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.ClientService.dll
          • Size 92KB
          • SHA256 ed32fe0d924959020cbef0534a7ba612e94263ccc74837475f3b5a6a726acad0
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.ClientService.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.ClientService.exe
          • Size 93KB
          • SHA256 16b4c273a25526e7262716ebe9d46480962347191a034595f18be740d9ce1e17
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.Core.dll
          • Size 579KB
          • SHA256 f64cb7ab5f105c22348a22e02dd506ff45456884639fee0f322862112860af24
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 c50d6e8d93ed197dd0cfb647743b42a2a6a9289f6db04092f56cefd6d569663e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsAuthenticationPackage.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.WindowsAuthenticationPackage.dll
          • Size 254KB
          • SHA256 a5b8f0070201e4f26260af6a25941ea38bd7042aefd48cd68b9acf951fa99ee5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.WindowsClient.exe
          • Size 678KB
          • SHA256 2ad8f126461607aad3fa31a41f1f39bc74f471fd84191b43e205610db2c4cf09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.WindowsClient.exe.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.WindowsClient.exe.config
          • Size 266B
          • SHA256 87c640d3184c17d3b446a72d5f13d643a774b4ecc7afbedfd4e8da7795ea8077
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsCredentialProvider.dll

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\ScreenConnect.WindowsCredentialProvider.dll
          • Size 837KB
          • SHA256 4868b7997b9b4260be2df752a81a750388243cdbea37e4d82a9e0101cd29d0c7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.config

          • Path C:\Program Files (x86)\ScreenConnect Client (b2d45ae15f610e77)\system.config
          • Size 970B
          • SHA256 981d67f56d0daca5bcd4c26948fc52c363ee37916b08b469feb00ec4c8108772
          • MD5 SHA1 SHA512 TLSH

          MSI3937.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3937.tmp
          • Size 1.1MB
          • SHA256 de867af8055f81b7691f12175deb4c4e7f3bf97130e51761ed02182b0496e16f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Microsoft.Deployment.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3937.tmp-\Microsoft.Deployment.WindowsInstaller.dll
          • Size 172KB
          • SHA256 3e54286e348ebd3d70eaed8174cca500455c3e098cdd1fccb167bc43d93db29d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3937.tmp-\ScreenConnect.Core.dll
          • Size 569KB
          • SHA256 e92d94613443befebb55b08f80d10a2fdbfc58233e8dc95cfb4466fde12964f7
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.InstallerActions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3937.tmp-\ScreenConnect.InstallerActions.dll
          • Size 24KB
          • SHA256 d827d3575ca29f8a40ea5379c7df2b315fc72cbd93451de94e199740594b51bb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          ScreenConnect.Windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI3937.tmp-\ScreenConnect.Windows.dll
          • Size 1.7MB
          • SHA256 320b89343e896a8d2ebf537861d800a9aca88245cc3b5616bb5bea5cc6797fbb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          CustomAction.config

          • Path C:\Users\Admin\AppData\Local\Temp\MSI405C.tmp-\CustomAction.config
          • Size 234B
          • SHA256 7027b69ab6ebc9f3f7d2f6c800793fde2a057b76010d8cfd831cf440371b2b23
          • MD5 SHA1 SHA512 TLSH

          ScreenConnect.WindowsInstaller.dll

          • Path C:\Users\Admin\AppData\Local\Temp\MSI405C.tmp-\ScreenConnect.WindowsInstaller.dll
          • Size 137KB
          • SHA256 dbf379b93127345a83282380aee634d0b70ec731acfeea76617c76e76fdc764f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          MSI985F.tmp

          • Path C:\Windows\Installer\MSI985F.tmp
          • Size 202KB
          • SHA256 3cff4ac91288a0ff0c13278e73b282a64e83d089c5a61a45d483194ab336b852
          • MD5 SHA1 SHA512 SSDEEP TLSH

          e599282.msi

          • Path C:\Windows\Installer\e599282.msi
          • Size 9.8MB
          • SHA256 731c070c47e185b46552c4905e3f1822894d94fd51924e4f6aa2c82cdfe160ea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          cilhsq2p.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b2d45ae15f610e77)\cilhsq2p.newcfg
          • Size 881B
          • SHA256 6bcb94fd75aa8f9a3ef1f2d184f9b524e1cae8fc7a6144a4f9e2f5cf8b17a69c
          • MD5 SHA1 SHA512 TLSH

          mramd3rd.newcfg

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b2d45ae15f610e77)\mramd3rd.newcfg
          • Size 683B
          • SHA256 61ff7d85c60c952d1db22eeb2ebcabe18deac6e42ccc17441fbfcc4f05bec2f6
          • MD5 SHA1 SHA512 TLSH

          user.config

          • Path C:\Windows\SysWOW64\config\systemprofile\AppData\Local\ScreenConnect Client (b2d45ae15f610e77)\user.config
          • Size 520B
          • SHA256 30f48fc73f5e0c563c6bba2ad07c46f299bcd0abf0cb75903146813707b03a7a
          • MD5 SHA1 SHA512 TLSH

          {b4b10da9-d003-4ea1-a604-255724b4d8fa}_OnDiskSnapshotProp

          • Path \??\Volume{c61f3bad-0000-0000-0000-d08302000000}\System Volume Information\SPP\OnlineMetadataCache\{b4b10da9-d003-4ea1-a604-255724b4d8fa}_OnDiskSnapshotProp
          • Size 6KB
          • SHA256 c5d289c7c4d73652a54379096e6b2d899db82ceb9b19313d58e6cbfdabe098b5
          • MD5 SHA1 SHA512 SSDEEP TLSH

          memory/204-64-0x00000000057E0000-0x0000000005808000-memory.dmp

          memory/1160-164-0x0000000004910000-0x0000000004960000-memory.dmp

          memory/1160-183-0x0000000004B90000-0x0000000004BFC000-memory.dmp

          memory/1160-184-0x0000000004CA0000-0x0000000004D32000-memory.dmp

          memory/1160-151-0x0000000004970000-0x0000000004B20000-memory.dmp

          memory/1160-186-0x0000000004B20000-0x0000000004B61000-memory.dmp

          memory/1160-147-0x0000000004720000-0x00000000047B4000-memory.dmp

          memory/1160-188-0x0000000004E90000-0x0000000004F66000-memory.dmp

          memory/1160-141-0x0000000002080000-0x000000000209A000-memory.dmp

          memory/1940-208-0x000000001B420000-0x000000001B48C000-memory.dmp

          memory/1940-207-0x0000000000750000-0x00000000007FE000-memory.dmp

          memory/1940-211-0x0000000002920000-0x000000000293A000-memory.dmp

          memory/1940-210-0x000000001BA00000-0x000000001BBB0000-memory.dmp

          memory/1940-209-0x000000001B490000-0x000000001B524000-memory.dmp

          memory/1940-212-0x000000001BD40000-0x000000001BEC8000-memory.dmp

          memory/4152-33-0x0000000006390000-0x0000000006540000-memory.dmp

          memory/4152-29-0x0000000006010000-0x00000000060A4000-memory.dmp

          memory/4152-25-0x0000000003EE0000-0x0000000003EEC000-memory.dmp

          memory/4152-34-0x0000000006B00000-0x00000000070BA000-memory.dmp

          memory/4152-21-0x0000000003E90000-0x0000000003EBE000-memory.dmp